i think it's atrocious. >> reporter: doctor bob arnot is the company's medical consultant. nges keep in mind, there's no evidence that it has caused any deaths at all. >> reporter: what deborah kennedy was referring to is a highly publicized lawsuit claiming that a 14-year-old girl had died of a cardiac arrhythmia, caused by caffeine toxicity after she consumed two 24-ounce cans of the drink. monster denies any responsibility in her death. she also had an underlying heart condition. no link has been proven. >> if every child really and trul i believed, as they were growing up, that energy drinks killed you, it would definitely hurt the market. >> reporter: but energy drinks like monster are the subject of a recent government report that found that in 2011, there were over 10,000 emergency department visits involving solely energy drinks. >> on your bottle, you say, "not recommended for children," so if you're not going to market to kids, why can't i say this? so, yeah, i'm getting quite the backlash.